US2463671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerant feed for multiple evaporator refrigerating systems
Assignee: Copeland Industrial LP
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Filing: 1944-07-31
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Granted: 1949-03-08
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Expires: 1964-07-31
Abstract
No abstract record available.
Inventors
- 👤 Charles G Bach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:00
CPC Classifications
F; F25; F25B; F25B41/00; F25B41/30; F25B41/31; F25B41/315
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-07 | 1952-09-06 | 1953-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-07 | 1956-09-06 | 1957-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-07 | 1960-09-06 | 1961-03-08 | $7700.00 | Window Closed / Lapsed |